274620
Current in an ac circuit is given by $\text{i}=3\text{sin}\omega \text{t}+4\text{cos}\omega t$ then
1 rms value of current is 5 A
2 mean value of this current in one half period will be $6/\pi $
3 if voltage applied is $\text{V}={{\text{V}}_{\text{m}}}\text{sin}\omega t$ then the circuit must be containing resistance and capacitance.
4 if voltage applied is $\text{V}={{\text{V}}_{\text{m}}}$ sin $\omega \text{t}$, the circuit may contain resistance and inductance.
Explanation:
(c) $\text{i}=3\text{sin}\omega \text{t}+4\text{cos}\omega \text{t}$
$=5\left[ \frac{3}{5}\text{sin}\omega t+\frac{4}{5}\text{cos}\omega t \right]=5\left[ \text{sin}\left( \omega t+\delta \right) \right]$
$\Rightarrow $ rms value $=\frac{5}{\sqrt{2}}\Rightarrow $ mean value $=\frac{{}}{{}}idt\therefore $ initial value is not given hence the mean value will be difference for various time intervals.
If voltage applied is $\text{V}={{\text{V}}_{\text{m}}}$ sin $\omega t$ then $\text{i}$ given by eq. (1) indicates that it is ahead of $V$ by $\delta $ where $0<\delta <{{90}^{\circ }}$ which indicates that the circuit contains $\text{R}$ and $\text{C}$.
NCERT Page-236 / N-180
AC (NCERT)
274621
An ac voltage is represented by $\text{E}=220\sqrt{2}\text{cos}\left( 50\pi \right)\text{t}$
How many times will the current become zero in $1\text{s}$ ?
1 50times
2 100 times
3 30 times
4 25 times
Explanation:
(a)
NCERT Page-236 / N-180
AC (NCERT)
274622
A group of electric lamps having a total power rating of 1000 watt is supplied by an AC voltage $\text{E}=200\text{sin}\left( 310t+{{60}^{\circ }} \right)$. Then the rms value of the circuit current is
1 $10\text{A}$
2 $10\sqrt{2}\text{A}$
3 $20\text{A}$
4 $20\sqrt{2}\text{A}$
Explanation:
(d)
NCERT Page-236 / N-180
AC (NCERT)
274623
The equation of alternating current is :
$I=50\sqrt{2}\text{sin}400\pi \text{t}$ amp. Then the frequency and root mean square of current are respectively
274620
Current in an ac circuit is given by $\text{i}=3\text{sin}\omega \text{t}+4\text{cos}\omega t$ then
1 rms value of current is 5 A
2 mean value of this current in one half period will be $6/\pi $
3 if voltage applied is $\text{V}={{\text{V}}_{\text{m}}}\text{sin}\omega t$ then the circuit must be containing resistance and capacitance.
4 if voltage applied is $\text{V}={{\text{V}}_{\text{m}}}$ sin $\omega \text{t}$, the circuit may contain resistance and inductance.
Explanation:
(c) $\text{i}=3\text{sin}\omega \text{t}+4\text{cos}\omega \text{t}$
$=5\left[ \frac{3}{5}\text{sin}\omega t+\frac{4}{5}\text{cos}\omega t \right]=5\left[ \text{sin}\left( \omega t+\delta \right) \right]$
$\Rightarrow $ rms value $=\frac{5}{\sqrt{2}}\Rightarrow $ mean value $=\frac{{}}{{}}idt\therefore $ initial value is not given hence the mean value will be difference for various time intervals.
If voltage applied is $\text{V}={{\text{V}}_{\text{m}}}$ sin $\omega t$ then $\text{i}$ given by eq. (1) indicates that it is ahead of $V$ by $\delta $ where $0<\delta <{{90}^{\circ }}$ which indicates that the circuit contains $\text{R}$ and $\text{C}$.
NCERT Page-236 / N-180
AC (NCERT)
274621
An ac voltage is represented by $\text{E}=220\sqrt{2}\text{cos}\left( 50\pi \right)\text{t}$
How many times will the current become zero in $1\text{s}$ ?
1 50times
2 100 times
3 30 times
4 25 times
Explanation:
(a)
NCERT Page-236 / N-180
AC (NCERT)
274622
A group of electric lamps having a total power rating of 1000 watt is supplied by an AC voltage $\text{E}=200\text{sin}\left( 310t+{{60}^{\circ }} \right)$. Then the rms value of the circuit current is
1 $10\text{A}$
2 $10\sqrt{2}\text{A}$
3 $20\text{A}$
4 $20\sqrt{2}\text{A}$
Explanation:
(d)
NCERT Page-236 / N-180
AC (NCERT)
274623
The equation of alternating current is :
$I=50\sqrt{2}\text{sin}400\pi \text{t}$ amp. Then the frequency and root mean square of current are respectively
274620
Current in an ac circuit is given by $\text{i}=3\text{sin}\omega \text{t}+4\text{cos}\omega t$ then
1 rms value of current is 5 A
2 mean value of this current in one half period will be $6/\pi $
3 if voltage applied is $\text{V}={{\text{V}}_{\text{m}}}\text{sin}\omega t$ then the circuit must be containing resistance and capacitance.
4 if voltage applied is $\text{V}={{\text{V}}_{\text{m}}}$ sin $\omega \text{t}$, the circuit may contain resistance and inductance.
Explanation:
(c) $\text{i}=3\text{sin}\omega \text{t}+4\text{cos}\omega \text{t}$
$=5\left[ \frac{3}{5}\text{sin}\omega t+\frac{4}{5}\text{cos}\omega t \right]=5\left[ \text{sin}\left( \omega t+\delta \right) \right]$
$\Rightarrow $ rms value $=\frac{5}{\sqrt{2}}\Rightarrow $ mean value $=\frac{{}}{{}}idt\therefore $ initial value is not given hence the mean value will be difference for various time intervals.
If voltage applied is $\text{V}={{\text{V}}_{\text{m}}}$ sin $\omega t$ then $\text{i}$ given by eq. (1) indicates that it is ahead of $V$ by $\delta $ where $0<\delta <{{90}^{\circ }}$ which indicates that the circuit contains $\text{R}$ and $\text{C}$.
NCERT Page-236 / N-180
AC (NCERT)
274621
An ac voltage is represented by $\text{E}=220\sqrt{2}\text{cos}\left( 50\pi \right)\text{t}$
How many times will the current become zero in $1\text{s}$ ?
1 50times
2 100 times
3 30 times
4 25 times
Explanation:
(a)
NCERT Page-236 / N-180
AC (NCERT)
274622
A group of electric lamps having a total power rating of 1000 watt is supplied by an AC voltage $\text{E}=200\text{sin}\left( 310t+{{60}^{\circ }} \right)$. Then the rms value of the circuit current is
1 $10\text{A}$
2 $10\sqrt{2}\text{A}$
3 $20\text{A}$
4 $20\sqrt{2}\text{A}$
Explanation:
(d)
NCERT Page-236 / N-180
AC (NCERT)
274623
The equation of alternating current is :
$I=50\sqrt{2}\text{sin}400\pi \text{t}$ amp. Then the frequency and root mean square of current are respectively
NEET Test Series from KOTA - 10 Papers In MS WORD
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AC (NCERT)
274620
Current in an ac circuit is given by $\text{i}=3\text{sin}\omega \text{t}+4\text{cos}\omega t$ then
1 rms value of current is 5 A
2 mean value of this current in one half period will be $6/\pi $
3 if voltage applied is $\text{V}={{\text{V}}_{\text{m}}}\text{sin}\omega t$ then the circuit must be containing resistance and capacitance.
4 if voltage applied is $\text{V}={{\text{V}}_{\text{m}}}$ sin $\omega \text{t}$, the circuit may contain resistance and inductance.
Explanation:
(c) $\text{i}=3\text{sin}\omega \text{t}+4\text{cos}\omega \text{t}$
$=5\left[ \frac{3}{5}\text{sin}\omega t+\frac{4}{5}\text{cos}\omega t \right]=5\left[ \text{sin}\left( \omega t+\delta \right) \right]$
$\Rightarrow $ rms value $=\frac{5}{\sqrt{2}}\Rightarrow $ mean value $=\frac{{}}{{}}idt\therefore $ initial value is not given hence the mean value will be difference for various time intervals.
If voltage applied is $\text{V}={{\text{V}}_{\text{m}}}$ sin $\omega t$ then $\text{i}$ given by eq. (1) indicates that it is ahead of $V$ by $\delta $ where $0<\delta <{{90}^{\circ }}$ which indicates that the circuit contains $\text{R}$ and $\text{C}$.
NCERT Page-236 / N-180
AC (NCERT)
274621
An ac voltage is represented by $\text{E}=220\sqrt{2}\text{cos}\left( 50\pi \right)\text{t}$
How many times will the current become zero in $1\text{s}$ ?
1 50times
2 100 times
3 30 times
4 25 times
Explanation:
(a)
NCERT Page-236 / N-180
AC (NCERT)
274622
A group of electric lamps having a total power rating of 1000 watt is supplied by an AC voltage $\text{E}=200\text{sin}\left( 310t+{{60}^{\circ }} \right)$. Then the rms value of the circuit current is
1 $10\text{A}$
2 $10\sqrt{2}\text{A}$
3 $20\text{A}$
4 $20\sqrt{2}\text{A}$
Explanation:
(d)
NCERT Page-236 / N-180
AC (NCERT)
274623
The equation of alternating current is :
$I=50\sqrt{2}\text{sin}400\pi \text{t}$ amp. Then the frequency and root mean square of current are respectively
